[BUGFIX] Show localized URL in "Link to external URL" page infobox

Resolves: #106895
Releases: main, 13.4, 12.4
Change-Id: I3e31130c64b45907908a0c64a114ebbbbeee3888
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/91564
Tested-by: core-ci <typo3@b13.com>
Tested-by: Lina Wolf <112@linawolf.de>
Tested-by: Andreas Nedbal <andy@pixelde.su>
Tested-by: Garvin Hicking <garvin@hick.ing>
Reviewed-by: Lina Wolf <112@linawolf.de>
Reviewed-by: Garvin Hicking <garvin@hick.ing>
Reviewed-by: Andreas Nedbal <andy@pixelde.su>

Author: pixeldesu

typo3/sysext/backend/Classes/Controller/PageLayoutController.php

@@ -398,7 +398,11 @@ protected function generateMessagesForCurrentPage(ServerRequestInterface $reques
                     'state' => ContextualFeedbackSeverity::ERROR,
                 ];
             } else {
-                $externalUrl = $this->resolveExternalUrl($this->pageinfo, $request);
+                if ($this->currentSelectedLanguage > 0 && ($overlayRecord = $this->getLocalizedPageRecord($this->currentSelectedLanguage)) !== null) {
+                    $externalUrl = $this->resolveExternalUrl($overlayRecord, $request);
+                } else {
+                    $externalUrl = $this->resolveExternalUrl($this->pageinfo, $request);
+                }
                 if ($externalUrl !== '') {
                     $externalUrl = htmlspecialchars($externalUrl);
                     $externalUrlHtml = '<a href="' . $externalUrl . '" target="_blank" rel="noreferrer">' . $externalUrl . '</a>';